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Finding the Fourth Proportional to 276,005.60, 414,008.40 and 231,390.80

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Solution

The fourth proportional to 276,005.60, 414,008.40 and 231,390.80 is: 347,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,005.60 : 414,008.40 = 231,390.80 : x
  2. Step 2: Convert to fraction form
    276,005.60/414,008.40 = 231,390.80/x
  3. Step 3: Cross multiply
    276,005.60x = 414,008.40 × 231,390.80
  4. Step 4: Simplify right side
    276,005.60x = 95,797,734,882.72
  5. Step 5: Solve for x
    x = 95,797,734,882.72/276,005.60
  6. Step 6: Final answer
    x = 347,086.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.